Contigency
a. 预防性
🗣️ 情景例句
Hello, how are you doing today?
你好， 今天怎么样？
I ate mushroom soup for lunch yesterday.
我昨天晚饭吃的是冬菇汤。
who is which depending on whether the customer's account is in credit or is overdrawn.
究竟谁是债务人谁是债权人，要看储户的账户是有结余还是透支。